CN201173996Y - Laser lamp scanning head and laser device for performance - Google Patents
Laser lamp scanning head and laser device for performance Download PDFInfo
- Publication number
- CN201173996Y CN201173996Y CNU2008200927347U CN200820092734U CN201173996Y CN 201173996 Y CN201173996 Y CN 201173996Y CN U2008200927347 U CNU2008200927347 U CN U2008200927347U CN 200820092734 U CN200820092734 U CN 200820092734U CN 201173996 Y CN201173996 Y CN 201173996Y
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Abstract
The utility model discloses a laser light scanning head, which comprises an X-Y scanning module and a grating rotation scanning module, wherein the grating rotation scanning module comprises a first grating and a first driving device, a power output end of the first driving device is coupled to the first grating so as to drive the first grating to rotate, the X-Y scanning module is arranged at an incident laser receiving position, the first grating is arranged in a light output region of the X-Y scanning module, and the laser light scanning head also comprises a second grating which is arranged between the X-Y scanning module and the first grating or is arranged in a light output region of the first grating. The utility model also discloses a laser show device, and the laser light scanning head of the laser show device comprises the X-Y scanning module, the grating rotation scanning module, and the second grating which is arranged between the X-Y scanning module and the first grating or is arranged in the light output region of the first grating. The second grating is arranged, so laser can show a firefly pattern with integral movement after second-order grating diffraction, which is richer than the representation of a pattern in the prior art.
Description
[technical field]
The utility model relates to the laser display control technology, relates in particular to a kind of laser lamp scanner head and laser performance device.
[background technology]
Existing laser performance system (or claiming laser lamp) roughly can be divided into two series according to the control mode of scanner head: galvanometer series laser lamp and stepper motor series laser lamp.The motor of vibration mirror scanning head is with the rotation of the scan mirror of simulating signal control, the Drive and Control Circuit complexity, and the cost height, but speed and precision height can be realized the complex pattern imaging, are applied in the field, middle and high end.The motor of scanning step motor head is controlled with digital pulse signal, and Drive and Control Circuit is simple relatively, and cost is low, but speed is low, can realize easy geometric scheme imaging, is applied in the low and middle-end field.And divide according to scanning head structure, the laser performance system of above-mentioned two series all comprises following several types:
1.X-Y scanner head
As shown in Figure 1, scanner head is made up of a pair of X-Y scanner head (or claiming module), mainly comprises X-axis motor 102, y-axis motor 202, X-axis reflecting optics 101, Y-axis reflecting optics 201 etc.X-axis motor 102 drives X-axis reflecting optics 101 and rotates, y-axis motor 202 drives Y-axis reflecting optics 201 and rotates, laser projects X-axis reflecting optics 101 (the X-direction parameter of this eyeglass control pattern) by light well 7 and reflexes to Y-axis reflecting optics 201 (the Y direction parameter of this eyeglass control pattern) again, after 201 effects of Y-axis reflecting optics throw away, present a two-dimensional pattern in the plane, present three-dimensional beam effect in the space.
2. a slice grating rotating scanner head
Because the special imaging function of grating diffration, grating widespread usage in the laser stage field.Grating is to depict many stripeds on media such as glass, and these striped gaps are very narrow, and certain regularity of distribution is arranged.The grating that is used for the laser display field is generally at 1mm spacing delineation 10～1000 stripeds.Beam of laser incides on the transmission-type grating, transmit some Shu Jiguang, or incide on the reflective gratings, reflect some Shu Jiguang, all can present several laser spots on the plane, whole laser spots is the certain rule issue, if lenticular lenses is done mechanical rotation, those laser spots also will be done corresponding motion.Adopt the grating of different size, just can obtain different laser spots and distribute; Similar and different grating is combined, laser is projected earlier on first grating, and the some Shu Jiguang that project project on the next grating again, can produce more complicated point like this and distribute, control grating simultaneously and rotate, just can be combined into the dynamic effect of many somes distribution patterns.
The simplest and easy grating laser lamp adopts a slice grating rotating scanner head, and its structure as shown in Figure 2.Grating 301 is mounted on the bearing 303, and bearing 303 is driven grating 301 and rotated together by drive of motor, also will be rotated together by the laser spots that grating 301 diffraction come out, and reaching with the central point is the dynamic rotate effect that rotate in the center of circle.Laser is through projecting the numerous laser spots effects of pattern generating on plane behind the optical grating diffraction, as the star of the sky, so the laser lamp of this effect can be called " babysbreath " laser lamp.The babysbreath pattern effect is more single, and application is restricted.
3. two sheet gration rotation sweep heads
Reach better some Shu Xiaoguo, adopt two sheet grations just can realize.Be illustrated in figure 3 as the laser lamp scanner head of two sheet gration devices, one of them grating 301 is installed on the bearing 303, is driven by bearing 303, and another grating 401 is fixing usually not to be rotated; Beam of laser projects on first sheet gration 301, go out several laser spots by first grating 301 diffraction, these points project on second sheet gration 401 again, and every bit laser goes out several laser spots with diffraction, presents many laser spots like this behind second grating 401.The quantity of laser spots and distribution shape are by the parameter and the relative position decision of these two gratings.Adopt the scanner head of two sheet grations, control the rotation of grating, can project the laser spots of many regular movements, can draw in and flock together, also can spread out, like the fireworks dispersion effect, also similar firefly is moved effect, so the laser lamp of this effect is called " firefly " laser lamp.The laser spots of firefly laser lamp is to be center of circle unitary rotation with the central point, can not wholely move, and this just makes scanning angle enough not big, has only this class effect of firefly.
4.X-Y scanner head+a slice grating rotating scanner head
In conjunction with X-Y scanner head and a slice grating rotating scanner head, design a kind of compound scanner head, its structure is as shown in Figure 4.Bright dipping zone at the X-Y scanner head increases a larger area grating 501, the laser that casts out from Y eyeglass 201 all incides on the grating 501, this grating 501 is installed on the bearing 504, and bearing 504 by bearing electric machine 502 transmissions, is realized grating rotating scanning by travelling belt 503.This laser lamp can reach two kinds of effects: 1, babysbreath and rotate effect thereof.2, X and Y direction move control, can realize wide-angle scanning, thereby realize the whole mobile effect of babysbreath.Usually this laser lamp " star all over the face of shaking the head " laser lamp.This kind scanner head can only present the babysbreath pattern, and is very single, and this is its defective.。
[summary of the invention]
Fundamental purpose of the present utility model is to overcome the above-mentioned defective of prior art, the abundant more laser lamp scanner head of a kind of pattern that tells on is provided and adopts the laser performance device of this laser lamp scanner head.
For achieving the above object, the utility model provides a kind of laser lamp scanner head, comprise X-Y scan module and grating rotating scan module, described grating rotating scan module comprises first grating and first drive unit, the clutch end of described first drive unit is coupled to described first grating to drive described first grating rotating, described X-Y scan module is arranged at incident laser and receives the position, described first grating is arranged at the bright dipping zone of described X-Y scan module, it is characterized in that, also comprise second grating, described second grating is arranged between described X-Y scan module and described first grating.
Also comprise second drive unit, the clutch end of described second drive unit is coupled to described second grating, controls that described second grating enters or disengaging effect position.
Also comprise connecting link, described second drive unit is the grating motor, one one of the shaft end of described grating motor and described connecting link links to each other, another one of described connecting link links to each other with described second grating, and described grating motor drives described second grating by described connecting link and moves on the plane perpendicular to direction of beam propagation.
For achieving the above object, the utility model provides another laser lamp scanner head, comprise X-Y scan module and grating rotating scan module, described grating rotating scan module comprises first grating and first drive unit, the clutch end of described first drive unit is coupled to described first grating to drive described first grating rotating, described X-Y scan module is arranged at the incident laser receiving position, described first grating is arranged at the bright dipping zone of described X-Y scan module, it is characterized in that, also comprise second grating, described second grating is arranged at the bright dipping zone of described first grating.
Also comprise second drive unit, the clutch end of described second drive unit is coupled to described second grating, controls that described second grating enters or disengaging effect position.
Also comprise connecting link, described second drive unit is the grating motor, one one of the shaft end of described grating motor and described connecting link links to each other, another one of described connecting link links to each other with described second grating, and described grating motor drives described second grating by described connecting link and moves on the plane perpendicular to direction of beam propagation.
For achieving the above object, the utility model also provides a kind of laser performance device, comprise the laser lamp scanner head, described laser lamp scanner head comprises X-Y scan module and grating rotating scan module, described grating rotating scan module comprises first grating and first drive unit, the clutch end of described first drive unit is coupled to described first grating to drive described first grating rotating, described X-Y scan module is arranged at the incident laser receiving position, described first grating is arranged at the bright dipping zone of described X-Y scan module, it is characterized in that, also comprise second grating, described second grating is arranged between described X-Y scan module and described first grating.
Described laser lamp scanner head also comprises second drive unit, and the clutch end of described second drive unit is coupled to described second grating, controls that described second grating enters or disengaging effect position.
For achieving the above object, the utility model also provides another laser performance device, comprise the laser lamp scanner head, described laser lamp scanner head comprises X-Y scan module and grating rotating scan module, described grating rotating scan module comprises first grating and first drive unit, the clutch end of described first drive unit is coupled to described first grating to drive described first grating rotating, described X-Y scan module is arranged at the incident laser receiving position, described first grating is arranged at the bright dipping zone of described X-Y scan module, it is characterized in that, also comprise second grating, described second grating is arranged at the bright dipping zone of described first grating.
Described laser lamp scanner head also comprises second drive unit, and the clutch end of described second drive unit is coupled to described second grating, controls that described second grating enters or disengaging effect position.
Useful technique effect of the present utility model is:
The utility model is provided with second grating between the X-Y scan module and first grating, perhaps second grating is set in the bright dipping zone of first grating, the outgoing beam of first grating and the second grating pair X-Y scan module acts on jointly, after light beam penetrates from the X-Y scan module, project earlier on second grating, the some Shu Jiguang that form behind the diffraction project on first grating again, perhaps, project earlier on first grating, project on second grating behind the diffraction again, like this, cooperate diffraction through the two-stage grating again by the light beam after the effect of X-Y scan module, can project the laser spots of many regular movements, the quantity of laser spots and distribution shape are by the parameter and the relative position decision of these two gratings, and the scanning of control X-Y scan module can be controlled the angle that the projection of pattern is gone out, the position, parameters such as whole pattern moves, final formation rotated around the center of circle and the whole firefly pattern that moves simultaneously.Than the single babysbreath pattern effect that existing apparatus produced, the pattern effect that the utility model generates enriches colourful more.
In improved plan, also set up second drive unit that is coupled with second grating, the second drive unit may command, second grating enters or breaks away from its light beam effect position, like this, the utility model can be selected second grating is set at effective or invalid, when needs second grating, by second drive unit second grating is adjusted to the effect position, this moment X-Y scan module and acting in conjunction of two-stage grating, produce the whole firefly pattern effect that moves, when not needing second grating, adjust its disengaging effect position, this moment X-Y scan module and acting in conjunction of first order grating produces the whole babysbreath pattern effect that moves.By this, the utility model has further reached multiple whole mobile pattern effect, and function is more powerful.
[description of drawings]
Fig. 1 is existing X-Y scanning head structure synoptic diagram;
Fig. 2 is existing a slice grating rotating scanning head structure synoptic diagram;
Fig. 3 is existing two sheet gration rotation sweep header structure synoptic diagram;
Fig. 4 adds a slice grating rotating scanning head structure synoptic diagram for existing X-Y scanner head;
Fig. 5 is the scanning head structure synoptic diagram (second grating is positioned at the effect position) of a kind of embodiment of the utility model;
Fig. 6 is the synoptic diagram (second grating disengaging effect position) of scanner head under another duty of Fig. 5.
[embodiment]
Feature of the present utility model and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
Please refer to Fig. 5, the laser lamp scanner head comprises X-Y scan module, raster scanning module and frame 8.X-Y scan module and raster scanning module are installed on the frame 8, and the surface of frame 8 offers light well 7.The X-Y scan module comprises X-axis reflecting optics 101, X-axis motor 102, Y-axis reflecting optics 201 and y-axis motor 202, X-axis reflecting optics 101 is arranged on the light incident route, position and the angle setting of Y-axis reflecting optics 201 to match with X-axis reflecting optics 101, X-axis motor 102 is coupled with X-axis reflecting optics 101 and rotates to drive X-axis reflecting optics 101, and y-axis motor 202 is coupled with Y-axis reflecting optics 201 and rotates to drive Y-axis reflecting optics 201.Laser projects X-axis reflecting optics 101 by the light well 7 of laser lamp scanner head, reflexes to Y-axis reflecting optics 201 again, projects the X-Y scan module via Y-axis reflecting optics 201 at last.X-axis reflecting optics 101 and Y-axis reflecting optics 201 are controlled the X-axis and the Y direction parameter of pattern respectively.The light that projected this moment can present a two-dimensional pattern in the plane, and presents three-dimensional beam effect in the space.
The raster scanning module comprises that first grating 501, first drive unit 502 and second grating, 601, the first gratings 501 are arranged at the bright dipping zone of X-Y scan module (the also receiving area of the light beam that promptly projects from the X-Y scan module).First grating 501 is a sheet, and its area is bigger.First drive unit 502 adopts bearing electric machine 502, the first gratings 501 to be mounted on the bearing 504, and bearing electric machine 502 rotates through gearing 503 (as travelling belt) driving bearing 504, and bearing 504 drives 501 rotations of first grating, realizes grating rotating scanning.Second grating 601 is fixedly mounted between the X-Y scan module and first grating 501, and by the angle setting perpendicular to direction of beam propagation, is on the effect position of X-Y scan module shoot laser.The laser that casts out from Y-axis eyeglass 201 all incides second grating 601 earlier, projects first grating 501 again by the some Shu Jiguang that form behind second grating, 601 diffraction, and then is diffracted into more multiple laser through first grating 501.By the turning effort of first grating 501, these laser beam also realize the rotation locomotive function simultaneously.
The laser lamp scanner head of this embodiment can produce the whole firefly pattern effect that moves.
Please refer to Fig. 5 and Fig. 6, as the improvement to the foregoing description, the clutch end of also setting up second drive unit, 602, the second drive units 602 is coupled to second grating 601, and may command second grating 601 enters or breaks away from laser beam effect position.Particularly, second drive unit 602 is a grating motor 602, and the shaft end of grating motor 602 links to each other with second grating 601 by a connecting link 603.By the transmission of connecting link 603, second grating 601 can be positioned under grating motor 602 drives on the plane perpendicular to direction of beam propagation and move, thereby controlledly enters or break away from its effect position.Like this, just can select to be set at second grating 601 effective or invalid, when needs second grating 601, by grating motor 602 second grating 601 is adjusted to the effect position, this moment, the laser lamp scanner head was by X-Y scan module and the acting in conjunction of two-stage grating, produce the whole firefly pattern effect that moves, when not needing second grating 601, adjust its disengaging effect position, the laser lamp scanner head produces the whole babysbreath pattern effect that moves by X-Y scan module and 501 actings in conjunction of first grating at this moment.
As another kind of alternate embodiments, second grating 601 can also be arranged at the bright dipping zone of first grating 501, that is, the laser beam that is projected by the X-Y scan module projects on second grating 601 through first grating, 501 diffraction earlier again, finally by bright dipping behind second grating, 601 diffraction.Similarly, can produce the whole firefly pattern effect that moves through X-Y scan module and the coefficient laser of two-stage grating.Be similar to the improvement of first kind of embodiment, the connection gear train that grating motor 602 can also be set and match, thereby utilize grating motor 602 control second grating 601 to enter or break away from its effect position, reach and make the laser lamp scanner head between firefly pattern effect and babysbreath pattern effect, select the purpose of switching.
The utility model is by being provided with second grating, make light beam cooperate diffraction through one-level rotating grating and this second grating by the effect of X-Y scan module, can project the laser spots of the similar firefly of many regular movements, form and rotate around the center of circle simultaneously and the whole firefly pattern that moves.Than the single babysbreath pattern effect that existing apparatus produced, the pattern effect that the utility model generates enriches colourful more.The drive unit that second grating is set both can produce existing babysbreath pattern effect to control the location status of second grating, can produce the whole firefly pattern effect that moves again.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (10)
1. laser lamp scanner head, comprise X-Y scan module and grating rotating scan module, described grating rotating scan module comprises first grating and first drive unit, the clutch end of described first drive unit is coupled to described first grating to drive described first grating rotating, described X-Y scan module is arranged at the incident laser receiving position, described first grating is arranged at the bright dipping zone of described X-Y scan module, it is characterized in that, also comprise second grating, described second grating is arranged between described X-Y scan module and described first grating.
2. laser lamp scanner head as claimed in claim 1 is characterized in that, also comprises second drive unit, and the clutch end of described second drive unit is coupled to described second grating, controls that described second grating enters or disengaging effect position.
3. laser lamp scanner head as claimed in claim 2, it is characterized in that, also comprise connecting link, described second drive unit is the grating motor, one one of the shaft end of described grating motor and described connecting link links to each other, another one of described connecting link links to each other with described second grating, and described grating motor drives described second grating by described connecting link and moves on the plane perpendicular to direction of beam propagation.
4. laser lamp scanner head, comprise X-Y scan module and grating rotating scan module, described grating rotating scan module comprises first grating and first drive unit, the clutch end of described first drive unit is coupled to described first grating and drives described first grating rotating, described X-Y scan module is arranged at the incident laser receiving position, described first grating is arranged at the bright dipping zone of described X-Y scan module, it is characterized in that, also comprise second grating, described second grating is arranged at the bright dipping zone of described first grating.
5. laser lamp scanner head as claimed in claim 4 is characterized in that, also comprises second drive unit, and the clutch end of described second drive unit is coupled to described second grating, controls that described second grating enters or disengaging effect position.
6. laser lamp scanner head as claimed in claim 5, it is characterized in that, also comprise connecting link, described second drive unit is the grating motor, one one of the shaft end of described grating motor and described connecting link links to each other, another one of described connecting link links to each other with described second grating, and described grating motor drives described second grating by described connecting link and moves on the plane perpendicular to direction of beam propagation.
7. laser performance device, comprise the laser lamp scanner head, described laser lamp scanner head comprises X-Y scan module and grating rotating scan module, described grating rotating scan module comprises first grating and first drive unit, the clutch end of described first drive unit is coupled to described first grating to drive described first grating rotating, described X-Y scan module is arranged at the incident laser receiving position, described first grating is arranged at the bright dipping zone of described X-Y scan module, it is characterized in that, also comprise second grating, described second grating is arranged between described X-Y scan module and described first grating.
8. laser performance device as claimed in claim 7 is characterized in that, described laser lamp scanner head also comprises second drive unit, and the clutch end of described second drive unit is coupled to described second grating, controls that described second grating enters or disengaging effect position.
9. laser performance device, comprise the laser lamp scanner head, described laser lamp scanner head comprises X-Y scan module and grating rotating scan module, described grating rotating scan module comprises first grating and first drive unit, the clutch end of described first drive unit is coupled to described first grating to drive described first grating rotating, described X-Y scan module is arranged at the incident laser receiving position, described first grating is arranged at the bright dipping zone of described X-Y scan module, it is characterized in that, also comprise second grating, described second grating is arranged at the bright dipping zone of described first grating.
10. laser performance device as claimed in claim 9, it is characterized in that, described laser lamp scanner head also comprises second drive unit, and the clutch end of described second drive unit is coupled to described second grating, controls that described second grating enters or disengaging effect position.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200927347U CN201173996Y (en) | 2008-03-21 | 2008-03-21 | Laser lamp scanning head and laser device for performance |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008200927347U CN201173996Y (en) | 2008-03-21 | 2008-03-21 | Laser lamp scanning head and laser device for performance |
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| CN201173996Y true CN201173996Y (en) | 2008-12-31 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102855833A (en) * | 2011-06-30 | 2013-01-02 | 时代光电科技股份有限公司 | Floating virtual real image display device |
| CN104345447A (en) * | 2014-10-16 | 2015-02-11 | 中国电子科技集团公司第五十研究所 | High-speed two-dimensional scanning mechanism |
| US9752761B2 (en) | 2014-07-16 | 2017-09-05 | Telebrands Corp. | Landscape light |
| USD797975S1 (en) | 2016-09-29 | 2017-09-19 | Telebrands Corp. | Landscape light |
| USD798484S1 (en) | 2016-09-29 | 2017-09-26 | Telebrands Corp. | Landscape light |
| USD804083S1 (en) | 2014-10-30 | 2017-11-28 | Telebrands Corp. | Landscape light |
| US9879847B2 (en) | 2015-12-03 | 2018-01-30 | Telebrands Corp. | Decorative lighting apparatus having two laser light sources |
| USD816890S1 (en) | 2015-05-11 | 2018-05-01 | Telebrands Corp. | Light projector |
| USD820507S1 (en) | 2015-05-11 | 2018-06-12 | Telebrands Corp. | Light projector |
| USD824066S1 (en) | 2015-05-11 | 2018-07-24 | Telebrands Corp. | Light projector |
| USD828619S1 (en) | 2015-05-11 | 2018-09-11 | Telebrands Corp. | Light projector |
| US10437141B2 (en) | 2017-07-21 | 2019-10-08 | Everstar Merchandise Co Ltd | Animation projector |
| CN112987286A (en) * | 2021-04-21 | 2021-06-18 | 中国工程物理研究院流体物理研究所 | Light beam scanning system based on volume Bragg grating |
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2008
- 2008-03-21 CN CNU2008200927347U patent/CN201173996Y/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102855833A (en) * | 2011-06-30 | 2013-01-02 | 时代光电科技股份有限公司 | Floating virtual real image display device |
| US9752761B2 (en) | 2014-07-16 | 2017-09-05 | Telebrands Corp. | Landscape light |
| US10228113B2 (en) | 2014-07-16 | 2019-03-12 | Telebrands Corp. | Landscape light |
| US10197234B2 (en) | 2014-07-16 | 2019-02-05 | Telebrands Corp. | Landscape light |
| US9869459B2 (en) | 2014-07-16 | 2018-01-16 | Telebrands Corp. | Landscape light |
| US9874327B2 (en) | 2014-07-16 | 2018-01-23 | Telebrands Corp. | Landscape light |
| CN104345447A (en) * | 2014-10-16 | 2015-02-11 | 中国电子科技集团公司第五十研究所 | High-speed two-dimensional scanning mechanism |
| USD804083S1 (en) | 2014-10-30 | 2017-11-28 | Telebrands Corp. | Landscape light |
| USD804715S1 (en) | 2014-10-30 | 2017-12-05 | Telebrands Corp. | Landscape light |
| USD816890S1 (en) | 2015-05-11 | 2018-05-01 | Telebrands Corp. | Light projector |
| USD820507S1 (en) | 2015-05-11 | 2018-06-12 | Telebrands Corp. | Light projector |
| USD821023S1 (en) | 2015-05-11 | 2018-06-19 | Telebrands Corp. | Light projector |
| USD824066S1 (en) | 2015-05-11 | 2018-07-24 | Telebrands Corp. | Light projector |
| USD828619S1 (en) | 2015-05-11 | 2018-09-11 | Telebrands Corp. | Light projector |
| USD828618S1 (en) | 2015-05-11 | 2018-09-11 | Telebrands Corp. | Light projector |
| US9879847B2 (en) | 2015-12-03 | 2018-01-30 | Telebrands Corp. | Decorative lighting apparatus having two laser light sources |
| USD798484S1 (en) | 2016-09-29 | 2017-09-26 | Telebrands Corp. | Landscape light |
| USD797975S1 (en) | 2016-09-29 | 2017-09-19 | Telebrands Corp. | Landscape light |
| US10437141B2 (en) | 2017-07-21 | 2019-10-08 | Everstar Merchandise Co Ltd | Animation projector |
| CN112987286A (en) * | 2021-04-21 | 2021-06-18 | 中国工程物理研究院流体物理研究所 | Light beam scanning system based on volume Bragg grating |
| CN112987286B (en) * | 2021-04-21 | 2021-07-20 | 中国工程物理研究院流体物理研究所 | Light beam scanning system based on volume Bragg grating |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081231 Termination date: 20100321 |